holy mackerel vs wo

holy mackerel

intj

  • An expression of surprise. 

wo

intj

  • A call to cause a horse to slow down or stop; whoa. 

  • A falconer's call to a hawk. 

noun

  • A wall. 

How often have the words holy mackerel and wo occurred in a corpus of books? (source: Google Ngram Viewer )